First Lady has become a style icon

Larry Downing/Associated Press

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FILE - This May 24, 2011 file photo shows President Barack Obama, second left, and first lady Michelle Obama, with Queen Elizabeth II, left, and Prince Philip, right, prior to a dinner hosted by the queen at Buckingham Palace in London. Michelle Obama is wearing a white cross-neck halter gown by Tom Ford. Michelle Obama has proven her fashion savvy time and time again since she was introduced to the country as first lady on Inauguration Day 2009. In the past four years she has adeptly walked the line between directional fashionista and everywoman. (AP Photo/Larry Downing, Pool)

FILE - This May 24, 2011 file photo shows President Barack Obama, second left, and first lady Michelle Obama, with Queen Elizabeth II, left, and Prince Philip, right, prior to a dinner hosted by the queen at Buckingham Palace in London. Michelle Obama is wearing a white cross-neck halter gown by Tom Ford. Michelle Obama has proven her fashion savvy time and time again since she was introduced to the country as first lady on Inauguration Day 2009. In the past four years she has adeptly walked the line between directional fashionista and everywoman. (AP Photo/Larry Downing, Pool)